The Second International Symposium on Computational Mechanics in conjunction with The Twelfth International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science
会议日期
2009-11
会议地点
Hong Kong and Macau
摘要
This paper presents exact density, velocity and temperature solutions for two problems of
collisionless gas flows around a flat plate or a spherical object. At any point off the object, the local velocity
distribution function consists of two pieces of Maxwellian distributions: one for the free stream which is
characterized by free stream density, temperature and average velocity, n0, T0, U0; and the other is for the wall
and it is characterized by density at wall and wall temperature, nw,Tw. Directly integrating the distribution
functions leads to complex but exact flowfield solutions. To validate these solutions, we perform numerical
simulations with the direct simulation Monte Carlo (DSMC) method. In general, the analytical and numerical
results are virtually identical. The evaluation of these analytical solutions only requires less than one minute
while the DSMC simulations require several days.
Cai C,Sun QH. Exact solutions to collisionless external gas flows[C]The Second International Symposium on Computational Mechanics in conjunction with The Twelfth International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science.Hong Kong and Macau.2009-11.,2009.
修改评论